crash

===--- building phase 0
make --no-print-directory -f ghc.mk phase=0 phase_0_builds
make[1]: Nothing to be done for 'phase_0_builds'.
===--- building phase 1
make --no-print-directory -f ghc.mk phase=1 phase_1_builds
make[1]: Nothing to be done for 'phase_1_builds'.
===--- building final phase
make --no-print-directory -f ghc.mk phase=final all
"inplace/bin/ghc-stage1" -hisuf hi -osuf  o -hcsuf hc -static  -H32m -O -Wall   -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header   -this-unit-id ghc-8.7 -hide-all-packages -i -icompiler/backpack -icompiler/basicTypes -icompiler/cmm -icompiler/codeGen -icompiler/coreSyn -icompiler/deSugar -icompiler/ghci -icompiler/hsSyn -icompiler/iface -icompiler/llvmGen -icompiler/main -icompiler/nativeGen -icompiler/parser -icompiler/prelude -icompiler/profiling -icompiler/rename -icompiler/simplCore -icompiler/simplStg -icompiler/specialise -icompiler/stgSyn -icompiler/stranal -icompiler/typecheck -icompiler/types -icompiler/utils -icompiler/stage2/build -Icompiler/stage2/build -icompiler/stage2/build/./autogen -Icompiler/stage2/build/./autogen -Icompiler/. -Icompiler/parser -Icompiler/utils -Icompiler/../rts/dist/build -Icompiler/stage2 -Icompiler/stage2/build/. -Icompiler/stage2/build/parser -Icompiler/stage2/build/utils -Icompiler/stage2/build/../rts/dist/build -Icompiler/stage2/build/stage2   -optP-DGHCI -optP-DINTEGER_GMP -optP-include -optPcompiler/stage2/build/./autogen/cabal_macros.h -package-id array-0.5.2.0 -package-id base-4.12.0.0 -package-id binary-0.8.5.1 -package-id bytestring-0.10.8.2 -package-id containers-0.6.0.1 -package-id deepseq-1.4.4.0 -package-id directory-1.3.3.0 -package-id filepath-1.4.2 -package-id ghc-boot-8.7 -package-id ghc-boot-th-8.7 -package-id ghc-heap-8.7 -package-id ghci-8.7 -package-id hpc-0.6.0.3 -package-id integer-gmp-1.0.2.0 -package-id process-1.6.3.0 -package-id template-haskell-2.14.0.0 -package-id terminfo-0.4.1.1 -package-id time-1.8.0.2 -package-id transformers-0.5.5.0 -package-id unix-2.8.0.0 -Wall -Wno-name-shadowing -Wnoncanonical-monad-instances -Wnoncanonical-monadfail-instances -Wnoncanonical-monoid-instances -this-unit-id ghc -XHaskell2010 -XNoImplicitPrelude -DNO_REGS -DNOSMP -optc-DNOSMP -optc-DTHREADED_RTS -DSTAGE=2 -Rghc-timing  -Wcpp-undef  -no-user-package-db -rtsopts       -Wnoncanonical-monad-instances  -odir compiler/stage2/build -hidir compiler/stage2/build -stubdir compiler/stage2/build   -dynamic-too -c compiler/hsSyn/HsInstances.hs -o compiler/stage2/build/HsInstances.o -dyno compiler/stage2/build/HsInstances.dyn_o